Modify Blocks
Select Blocks
Press (1) on your keyboard or change selection mode to Blocks using the selection dropdown menu in top-left corder of the tool.
By default when you select a block the gumball mode is set to Move. You can activate the other gumball modes with the keyboard keys [W] move, [E] Rotate and [R] Scale.
In order to move, scale and rotate blocks, you can use the gumball commands. The Gumball displays a gumball widget on a selected object facilitating move, scale, and rotate transformations around the gumball origin.